Jar-closure.



H. HARTMANN.

JAR CLOSURE. APPLICATION FILED JUNE 17, 1915.

1, 1 78,5 7 Patented .Apr. 11, 1916 M'hzaasas I I7; avatar.-

'UNITED STATES PATENT OFFICE.

HEINRICH HARTMANN, OF AHRENSEbCK, GERMANY, ASSIGNOR TO FIRM GLOBUS, GUMMI- & ASBESTWERKE G. M. B. 11., OF AHRENSBfiGK, GERMANY.

JAR-CLOSURE.

Specification of Letters Patent.

Patented Apr. 11, 1916.

Application filed J une 17, 1915. Serial No. 34,761.

1 '0 all whom it may concern:

Be it known that I, HEINRICH HARTMANN, subject of the German Emperor, residing at Ahrensbock, Germany, have invented certain new and useful Improvements in Jar-Closures, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to certain new and useful improvements in closures for preserve glasses and the like and it has for its objects among others to provide a simple broken away, showing my improved con-- struction. Fig. 2 is a top plan of the glass or jar after it has been sealed.

Like letters of reference indicate like parts in the different views.

Referring to the drawings, A designates the glass, jar or other vessel, and B the lid or cover thereof, of any suitable material, such as glass or other analogous substance. The lid is provided with a vertical opening C, preferably disposed centrally thereof, as shown, and the depending outer rim of this lid is supported upon a fat and acid resisting jug-ring D, preferably of inelastic rubber. This jug-ring is supported on the upper edge of the surrounding wall of the vessel A, as seen in Fig. 1, and the lid rests thereon. A piece or plate E of suitable material, such as inelastic rubber, is placed on the upper face of the lid B over the opening C, as seen in Fig. 1. A bow F is then placed in position with its ends engaging beneath the flange of the top of the vessel, as seen in Fig. 1, the spring F carried by said bow resting upon the plate E and the other spring of the bow bearing downward upon the firstnamed spring, all as clearly indicated in Fig. 1. This serves to hold the plate E fixedly in position over the hole C. The vessel is then sterilized, whereupon the plate E presses itself tightly into the opening and at the same time joins closely the upper surface of the lid. The bow F is then removed. The depending flange of the rim of the lid embeds itself in the jug-ring D and thus a liquid and air-tight joint is formed.

When it is desired to open the vessel, the plate E can be removed by a suitable instrument or it may be penetrated so that the air can enter the vessel, when the lid can be removed.

In order to make the plate E more capable of resisting exterior influence, the upper surface can be covered with linen or other suitable fabric or material.

The inelastic rubber is a composition of unvulcanized rubber mixed with asbestos fibers and rosin. This forms a soft substance which resists acids; it forms an excellent air-tight ring and the composition is exceedingly brittle and thus avoids a future use of the ring.

What is claimed as new is A closure for a preserve glass or the like, comprising a lid having a vertical opening therethrough, an inner depending flange to extend within'the glass, and an outer depending rim, an inelastic rubber rin adapted to rest upon the upper edge of the glass and be engaged by said rim, a plate of inelastic material resting on the lid over said opening, a bow having ends to engage beneath a .flange on the top of the glass, a bow spring carried by said how and restin upon said plate, and an oppositely disposed bow spring carried by said bow and hearing upon the lateral extension of the firstnamed spring.

In testimony whereof I aflix my signature in the presence of two witnesses.

HEINRICH HARTMANN. 

